Kyoritsu 3123A User Manual download pdf (Page 7)

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CAUTION:

BE CAREFUL ABOUT HIGH VOLTAGE PRESENT ACROSS LINE

AND EARTH TERMINALS OF INSTRUMENT WHEN PRESS TO

TEST BUTTON IS OPERATED. MAKE SURE TO EARTH CIRCUIT

UNDER TEST. ALWAYS CONNECT EARTH TERMINAL OF

INSTRUMENT TO EARTH. THE BUZZER WILL KEEP SOUNDING

DURING INSULATION RESISTANCE MEASUREMENT.

4-1. Mechanical Zero Adjustment

With the function switch set at OFF position, adjust the meter

pointer to

“∞ mark ”on the scale. Use a screwdriver to turn the

zero adjust screw located at the center of the front panel.

4-2. Battery Check

With the function switch set at BATT. CHECK position, operate the

press to test button. The batteries are good when the pointer stays

in BATT. GOOD area or to the right of this area. If not, replace them.

Note: Refrain from holding down or locking the press to

test butt

on during this test as it will result in current

consumption larger than insulation resistance

measurement while the batteries are still new.

4. Operating Instructions

1 2 3 4 5 6 7 8 9 10 11 12

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Kyoritsu 3123A User Manual Page 7